Lubricant composition

Abstract

A lubricant composition comprises (a) an optionally esterified or etherified reaction product of (i) an alcohol comprising up to 6 hydroxy groups and no heteroatom other than oxygen and (ii) one or more alkylene oxides; and (b) a reaction product of (i) ammonia or an alkanol amine and (ii) one or more alkylene oxides, wherein the average OH-functionality of the reaction products (a) and (b) is up to 4.5 and the total number of units derived from alkylene oxide in the reaction product (b) is up to about 12. The lubricant composition is particularly useful for treating fiber materials.

What is claimed is:  
     
       1. A lubricant composition comprising 
       a) from 70 to 99 percent of an optionally esterified or etherified reaction product of i) an alcohol comprising up to 6 hydroxy groups and no heteroatom other than oxygen and ii) one or more alkylene oxides of 2 to 4 carbon atoms, the total number of alkylene oxide units being from 3 to 100, which reaction product comprises up to 6 hydroxy groups or is partially or fully esterified with an aliphatic saturated or unsaturated C 1-20 -monocarboxylic acid or an acid halide thereof or is partially or fully etherified with a C 1-4  halide or sulfate; and  
       b) from 1 to 30 percent of a compound of Formula I                    
       wherein each R 1  independently is a hydrocarbon group comprising from 1 to 6 carbon atom, 
       each R 2  independently is hydrogen, methyl or ethyl,  
       a, b and c each are 1, and  
       m, n and o each independently are from 0 to 12, with the proviso that the sum of m, n and o is from 1 to 12,  
       the percentages of a) and b) being based on the total weight of a) and b), and wherein the average OH-functionality of the total of the reaction product a) and the compound b) is up to 4.5.  
     
     
       2. The lubricant composition of  claim 1 , wherein the reaction product a) is a reaction product of i) an alcohol comprising from 1 to 4 hydroxy groups and no heteroatom other than oxygen and ii) one or more alkylene oxides of 2 to 4 carbon atoms. 
     
     
       3. The lubricant composition of  claim 1 , wherein in formula I m, n and o each independently are from 0 to 6. 
     
     
       4. The lubricant composition of  claim 1  comprising from 80 to 97.5 percent of the reaction product a) and from 2.5 to 20 percent of the compound b), based on the total weight of a) and b). 
     
     
       5. The lubricant composition of  claim 1 , wherein the sum of the reaction product a) and the compound b) is from 50 to 95 percent, based on the total weight of the lubricant composition. 
     
     
       6. The lubricant composition of  claim 1  having a viscosity of up to 100 mm 2 s −1  (cSt) at 20° C. 
     
     
       7. A method of lubricating a fiber material comprising the step of applying to the fiber material the lubricant composition of  claim 1 . 
     
     
       8. The method of  claim 7  wherein the lubricant composition of any one of claims  2 ,  4 ,  5 ,  6  and  7  is applied to the fiber material. 
     
     
       9. The lubricant composition of  claim 2 , wherein in formula I m, n and o each independently are from 0 to 6. 
     
     
       10. The lubricant composition of  claim 9  wherein the reaction product a) comprises from 3 to 50 units derived from one or more alkylene oxides of 2 to 4 carbon atoms. 
     
     
       11. The lubricant composition of  claim 3  wherein in formula I the sum of m, n and o is from 1 to 8. 
     
     
       12. The lubricant composition of  claim 10  wherein in formula I the sum of m, n and o is from 1 to 8. 
     
     
       13. The lubricant composition of  claim 12  comprising from 80 to 97.5 percent of the reaction product a) and from 2.5 to 20 percent of the compound b), based on the total weight of a) and b). 
     
     
       14. The lubricant composition of  claim 13  having a viscosity of up to 100 mm 2 s −1  (cSt) at 20° C. 
     
     
       15. A lubricant composition comprising 
       a) from 80 to 97.5 percent of an optionally esterified or etherified reaction product of i) an alcohol comprising from 1 to 4 hydroxy groups and no heteroatom other than oxygen and ii) one or more alkylene oxides of 2 to 4 carbon atoms, the total number of alkylene oxide units being from 3 to 100, which reaction product comprises up to 4 hydroxy groups or is partially or fully esterified with an aliphatic saturated or unsaturated C 1-20 -mono-carboxylic acid or an acid halide thereof or is partially or fully etherified with a C 1-4  halide or sulfate; and  
       b) from 1 to 30 percent of a compound of Formula I                    
       wherein each R 1  independently is a hydrocarbon group comprising from 1 to 4 carbon atom, 
       each R 2  independently is hydrogen, methyl or ethyl,  
       a, b and c each are 1, and  
       m, n and o each independently are from 0 to 6, with the proviso that the sum of m, n and o is from 1 to 12,  
       the percentages of a) and b) being based on the total weight of a) and b), and  
       wherein the average OH-functionality of the total of the reaction product a) and the compound b) is up to 4.5.  
     
     
       16. A method of lubricating a device selected from the group consisting of air compressors, compressor heat-pumps, refrigerator plant compressors or a metal working devices comprising the step of applying to the device the lubricant composition of  claim 1 .